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Ying S, Liu X, Guo T, Li X, Zhou M, Wang X, Zhu M, Jiang H, Gui QW. Ultrasound-assisted bromination of indazoles at the C3 position with dibromohydantoin. RSC Adv 2022; 13:581-585. [PMID: 36605629 PMCID: PMC9773018 DOI: 10.1039/d2ra06867b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
Bromoaryl compounds have attracted great attention in organic chemistry, especially for the synthesis of pharmaceutical intermediates. Herein, we demonstrated a novel and efficient bromination protocol of indazoles via C-H bond cleavage to give site-specific 3-bromide products that could be further employed as synthetic blocks to prepare drugs. The reaction used DBDMH as a bromine source, tolerated a wide range of indazoles, and finished in 30 min under mild, ultrasound-assisted conditions. Besides, preliminary mechanistic studies revealed that this approach was not a radical process.
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Affiliation(s)
- Shengneng Ying
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Xingru Liu
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Tao Guo
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Xuan Li
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Min Zhou
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Xia Wang
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Mengxue Zhu
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Hongmei Jiang
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
| | - Qing-Wen Gui
- College of Chemistry and Materials Science, Hunan Agricultural UniversityChangsha 410082HunanP. R. China
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Bhosle SD, Jadhav KA, Itage SV, Bandaru S, Bhosale RS, Yadav JS. Zn catalyzed a simple and convenient method for thiourea synthesis. J Sulphur Chem 2022. [DOI: 10.1080/17415993.2022.2126319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Siddhanath D. Bhosle
- Department of Chemistry, School of Science, Indrashil University, Mehsana, India
| | - Krishna A. Jadhav
- Department of Chemistry, School of Science, Indrashil University, Mehsana, India
| | - Shivanand V. Itage
- Department of Chemistry, School of Science, Indrashil University, Mehsana, India
| | - Sateesh Bandaru
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, People’s Republic of China
| | - Rajesh S. Bhosale
- Department of Chemistry, School of Science, Indrashil University, Mehsana, India
| | - Jhillu Singh Yadav
- Department of Chemistry, School of Science, Indrashil University, Mehsana, India
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Chandrakar K, Patel JL, Mahapatra SP, Penta S. Recent Advances in On-Water Multicomponent Synthesis of Coumarin Derivatives. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999201013164825] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Coumarin-linked heterocycles represent privileged structural subunits and are welldistributed
in naturally occurring compounds with immense biological activities. Multicomponent
reactions (MCRs) are becoming a valuable tool for synthesizing structurally diverse
molecular entities. On the other hand, the last year has seen a tremendous outburst in modifying
chemical processes to make them sustainable for the betterment of our environment. The
application of aqueous medium in organic synthesis is fulfilling some of the goals of ‘green
and sustainable chemistry’ as it has some advantages over the traditional synthetic methods in
terms of reaction rates, yields, purity of the products, product selectivity, etc. Hence, significant
progress has been made in recent years. In the present review, we provide an overview of
the recent developments of multicomponent synthesis of biologically relevant coumarin
linked and fused heterocyclic compounds carried out from 2015 till today in an aqueous medium.
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Affiliation(s)
- Komal Chandrakar
- Department of Chemistry, National Institute of Technology Raipur, G. E. Road, Raipur-492010, Chhattisgarh, India
| | - Jeevan Lal Patel
- Department of Chemistry, National Institute of Technology Raipur, G. E. Road, Raipur-492010, Chhattisgarh, India
| | - S. P. Mahapatra
- Department of Chemistry, National Institute of Technology Raipur, G. E. Road, Raipur-492010, Chhattisgarh, India
| | - Santhosh Penta
- Department of Chemistry, National Institute of Technology Raipur, G. E. Road, Raipur-492010, Chhattisgarh, India
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Steppeler F, Iwan D, Wojaczyńska E, Wojaczyński J. Chiral Thioureas-Preparation and Significance in Asymmetric Synthesis and Medicinal Chemistry. Molecules 2020; 25:E401. [PMID: 31963671 PMCID: PMC7024223 DOI: 10.3390/molecules25020401] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 01/23/2023] Open
Abstract
For almost 20 years, thioureas have been experiencing a renaissance of interest with the emerged development of asymmetric organocatalysts. Due to their relatively high acidity and strong hydrogen bond donor capability, they differ significantly from ureas and offer, appropriately modified, great potential as organocatalysts, chelators, drug candidates, etc. The review focuses on the family of chiral thioureas, presenting an overview of the current state of knowledge on their synthesis and selected applications in stereoselective synthesis and drug development.
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Affiliation(s)
- Franz Steppeler
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland; (F.S.); (D.I.)
| | - Dominika Iwan
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland; (F.S.); (D.I.)
| | - Elżbieta Wojaczyńska
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland; (F.S.); (D.I.)
| | - Jacek Wojaczyński
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie St., 50 383 Wrocław, Poland;
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Jangale AD, Dalal DS. Green synthetic approaches for biologically relevant organic compounds. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1369544] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Asha D. Jangale
- School of Chemical Sciences, North Maharashtra University, Jalgaon, India
| | - Dipak S. Dalal
- School of Chemical Sciences, North Maharashtra University, Jalgaon, India
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6
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Dithiocarbamate to modify magnetic graphene oxide nanocomposite (Fe 3 O 4 -GO): A new strategy for covalent enzyme (lipase) immobilization to fabrication a new nanobiocatalyst for enzymatic hydrolysis of PNPD. Int J Biol Macromol 2017; 101:696-702. [DOI: 10.1016/j.ijbiomac.2017.03.152] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 03/25/2017] [Accepted: 03/27/2017] [Indexed: 12/25/2022]
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Banerjee B. Recent developments on ultrasound assisted catalyst-free organic synthesis. ULTRASONICS SONOCHEMISTRY 2017; 35:1-14. [PMID: 27771266 DOI: 10.1016/j.ultsonch.2016.09.023] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/23/2016] [Accepted: 09/27/2016] [Indexed: 05/04/2023]
Abstract
Mother Nature needs to be protected from ever increasing chemical pollutions associated with synthetic organic processes. The fundamental challenge for today's methodologists is to make their protocols more environmentally benign and sustainable by avoiding the extensive use of hazardous reagents and solvents, harsh reaction conditions, and toxic metal catalysts. However, the people of the twenty-first century are well aware about the side effects of those hazardous substances used and generated by the chemical processes. As a result, the last decade has seen a tremendous outburst in modifying chemical processes to make them 'sustainable' for the betterment of our environment. Catalysts play a crucial role in organic synthesis and thus they find huge applications and uses. Scientists' continuously trying to modify the catalysts to reduce their toxicity level, but the most benign way is to design an organic reaction without catalyst(s), if possible. It is worthy to mention that the involvement of ultrasound in organic synthesis is sometimes fulfilling this goal. In many occasions the applications of ultrasound can avoid the use of catalysts in organic reactions. Such beneficial features as a whole have motivated the organic chemists to apply ultrasonic irradiation in more heights and as a results, in recent past, there were immense applications of ultrasound in organic reactions for the synthesis of diverse organic scaffolds under catalyst-free condition. The present review summarizes the latest developments on ultrasound assisted catalyst-free organic synthesis reported so far.
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Affiliation(s)
- Bubun Banerjee
- Department of Chemistry, Indus International University, V.P.O. Bathu, Distt. Una, Himachal Pradesh 174301, India.
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Üngören ŞH, Sırça F. Novel self-condensation of ammonium dithiocarbamates leading to symmetrical substituted thioureas. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2016.1223075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Şevket Hakan Üngören
- Department of Chemistry, Faculty of Arts and Sciences, Bozok University, Yozgat, Turkey
| | - Fatih Sırça
- Department of Chemistry, Faculty of Arts and Sciences, Bozok University, Yozgat, Turkey
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